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Altera_Forum's avatar
Altera_Forum
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18 years ago

ISP for MaxII

Hi All, I have a MaxII in my design working in conjunction with a standard 16bit micro. I can update the micro firmware in the field over a comms link and would like to be able to reconfigu...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

Hi everyone,

For anyone who is interested in this we've finally got a solution. We're using the .svf file format that can be generated from QuartusII. The .svf describes the programming procedure at a very low level in terms of JTAG states and data transfer.

The .svf file generated is quite large (it is an ASCII file). We've written an interpreter that converts it into a proprietary binary format and then stream that down to our micro. The micro then interprets each command and toggles the JTAG lines accordingly. I think that the programming time is slower than would be for a design which used JRunner (order of minutes for MaxII 240) but it has a minimal ram usage which is essential for our platform.

Jim